(4) Not only is the weight of the sound seeds from diseased bolls 

 reduced, but the vitality of such seeds is impaired. The germination 

 of these seeds can fall as low as half that found for seeds from sound 

 bolls. See Table II. 



(5) Although the percentage of seed has risen considerably it 

 is largely made up of hulls and broken seed. 



(6) The amount of lint and of seed present in attacked bolls never 

 reaches the quantity found in the sound, control bolls. The amount 

 actually found in our samples was in the worst case only one-quarter 

 of the control, in the best case only three-quarters. 



The nature of the damage done by the Pink Boll Worm can be 

 summarized as being : 



(1) Reduction in number, weight, and vitality of seeds. 



(2) Reduction in weight and quality of the lint. 



(3) Reduction of percentage of lint (ginning output), with a fall 

 in quality of the seed, the place of some seeds being taken by worthless 

 hulls and broken seed. 



With reference to Table I, although the percentage of lint 

 for total seed cotton from damaged bolls shows a diminution of from 

 0-3 to 12-1 (average 3-9) compared with seed cotton from the sound 

 bolls, under ordinary ginning conditions it would probably be found 

 that the lint from damaged seed cotton would show a larger proportion 

 on the actual output (ginned cotton + bagged seed), as in the process 

 of ginning a large quantity of hollow seed would be lost altogether. 

 Although this does not affect the statements and deductions made in 

 connection with these experiments, it is necessary to point out that 

 the proportionate amount of lint to seed actually marketed might 

 be expected to be increased owing to a Gelechia attack. 



All these experiments were, as before stated, conducted with 

 second picking cotton and further experiments on the same lines are 

 therefore desirable with cotton from the first picking, which when 

 completed should serve as a useful assistance for the estimation of 

 the crop. 



